Cap for writing tools
FIG. 1 is a right front perspective view of a cap for writing tools showing my new design; 
     FIG. 2 is a front elevational view thereof; 
     FIG. 3 is a right side elevational view, the left side being a mirror image thereof; 
     FIG. 4 is a rear elevational view thereof; 
     FIG. 5 is a top plan view thereof; 
     FIG. 6 is a bottom plan view thereof; and 
     FIG. 7 is a right side elevational view thereof, the writing instrument depicted by means of broken lines being for illustrative purposes only and forming no part of the claimed design.